1 # Copyright 1999-2016 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
5 # @ECLASS: linux-info.eclass
9 # Original author: John Mylchreest <johnm@gentoo.org>
10 # @BLURB: eclass used for accessing kernel related information
12 # This eclass is used as a central eclass for accessing kernel
13 # related information for source or binary already installed.
14 # It is vital for linux-mod.eclass to function correctly, and is split
15 # out so that any ebuild behaviour "templates" are abstracted out
16 # using additional eclasses.
18 # "kernel config" in this file means:
19 # The .config of the currently installed sources is used as the first
20 # preference, with a fall-back to bundled config (/proc/config.gz) if available.
22 # Before using any of the config-handling functions in this eclass, you must
23 # ensure that one of the following functions has been called (in order of
24 # preference), otherwise you will get bugs like #364041):
25 # linux-info_pkg_setup
26 # linux-info_get_any_version
30 # A Couple of env vars are available to effect usage of this eclass
31 # These are as follows:
33 # @ECLASS-VARIABLE: KERNEL_DIR
35 # A string containing the directory of the target kernel sources. The default value is
38 # @ECLASS-VARIABLE: CONFIG_CHECK
40 # A string containing a list of .config options to check for before
41 # proceeding with the install.
43 # e.g.: CONFIG_CHECK="MTRR"
45 # You can also check that an option doesn't exist by
46 # prepending it with an exclamation mark (!).
48 # e.g.: CONFIG_CHECK="!MTRR"
50 # To simply warn about a missing option, prepend a '~'.
51 # It may be combined with '!'.
53 # In general, most checks should be non-fatal. The only time fatal checks should
54 # be used is for building kernel modules or cases that a compile will fail
57 # This is to allow usage of binary kernels, and minimal systems without kernel
60 # @ECLASS-VARIABLE: ERROR_<CFG>
62 # A string containing the error message to display when the check against CONFIG_CHECK
63 # fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
65 # e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
67 # @ECLASS-VARIABLE: KBUILD_OUTPUT
69 # A string passed on commandline, or set from the kernel makefile. It contains the directory
70 # which is to be used as the kernel object directory.
72 # There are also a couple of variables which are set by this, and shouldn't be
73 # set by hand. These are as follows:
75 # @ECLASS-VARIABLE: KV_FULL
77 # A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
79 # @ECLASS-VARIABLE: KV_MAJOR
81 # A read-only variable. It's an integer containing the kernel major version. ie: 2
83 # @ECLASS-VARIABLE: KV_MINOR
85 # A read-only variable. It's an integer containing the kernel minor version. ie: 6
87 # @ECLASS-VARIABLE: KV_PATCH
89 # A read-only variable. It's an integer containing the kernel patch version. ie: 9
91 # @ECLASS-VARIABLE: KV_EXTRA
93 # A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
95 # @ECLASS-VARIABLE: KV_LOCAL
97 # A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
99 # @ECLASS-VARIABLE: KV_DIR
101 # A read-only variable. It's a string containing the kernel source directory, will be null if
102 # KERNEL_DIR is invalid.
104 # @ECLASS-VARIABLE: KV_OUT_DIR
106 # A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
107 # KBUILD_OUTPUT is used. This should be used for referencing .config.
109 # And to ensure all the weirdness with crosscompile
110 inherit toolchain-funcs versionator
112 EXPORT_FUNCTIONS pkg_setup
114 # Overwritable environment Var's
115 # ---------------------------------------
116 KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
122 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
123 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
126 # @FUNCTION: set_arch_to_kernel
128 # Set the env ARCH to match what the kernel expects.
129 set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
130 # @FUNCTION: set_arch_to_portage
132 # Set the env ARCH to match what portage expects.
133 set_arch_to_portage() { export ARCH=$(tc-arch); }
136 # -------------------
137 # qeinfo is a quiet einfo call when EBUILD_PHASE
138 # should not have visible output.
144 case "${EBUILD_PHASE}" in
145 depend) unset outputmsg;;
146 clean) unset outputmsg;;
147 preinst) unset outputmsg;;
149 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
152 qeinfo() { qout einfo "${@}" ; }
153 qewarn() { qout ewarn "${@}" ; }
154 qeerror() { qout eerror "${@}" ; }
157 # ---------------------------------------
159 # @FUNCTION: getfilevar
160 # @USAGE: variable configfile
161 # @RETURN: the value of the variable
163 # It detects the value of the variable defined in the file configfile. This is
164 # done by including the configfile, and printing the variable with Make.
165 # It WILL break if your makefile has missing dependencies!
167 local ERROR basefname basedname myARCH="${ARCH}" M="${S}"
170 [ -z "${1}" ] && ERROR=1
171 [ ! -f "${2}" ] && ERROR=1
173 if [ "${ERROR}" = 1 ]
176 eerror "getfilevar requires 2 variables, with the second a valid file."
177 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
179 basefname="$(basename ${2})"
180 basedname="$(dirname ${2})"
183 # We use nonfatal because we want the caller to take care of things #373151
184 [[ ${EAPI:-0} == [0123] ]] && nonfatal() { "$@"; }
185 case ${EBUILD_PHASE_FUNC} in
186 pkg_info|pkg_nofetch|pkg_pretend) M="${T}" ;;
188 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
189 nonfatal emake -C "${basedname}" M="${M}" ${BUILD_FIXES} -s -f - 2>/dev/null
195 # @FUNCTION: getfilevar_noexec
196 # @USAGE: variable configfile
197 # @RETURN: the value of the variable
199 # It detects the value of the variable defined in the file configfile.
200 # This is done with sed matching an expression only. If the variable is defined,
201 # you will run into problems. See getfilevar for those cases.
202 getfilevar_noexec() {
203 local ERROR basefname basedname mycat myARCH="${ARCH}"
207 [ -z "${1}" ] && ERROR=1
208 [ ! -f "${2}" ] && ERROR=1
209 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
211 if [ "${ERROR}" = 1 ]
214 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
215 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
219 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
220 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
221 s,[[:space:]]*\$,,g ;
227 # @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
230 # This is only set if one of the linux_config_*exists functions has been called.
231 # We use it for a QA warning that the check for a config has not been performed,
232 # as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
233 # config is available at all.
234 _LINUX_CONFIG_EXISTS_DONE=
236 linux_config_qa_check() {
238 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
239 ewarn "QA: You called $f before any linux_config_exists!"
240 ewarn "QA: The return value of $f will NOT guaranteed later!"
244 # @FUNCTION: linux_config_src_exists
245 # @RETURN: true or false
247 # It returns true if .config exists in a build directory otherwise false
248 linux_config_src_exists() {
249 export _LINUX_CONFIG_EXISTS_DONE=1
250 [[ -n ${KV_OUT_DIR} && -s ${KV_OUT_DIR}/.config ]]
253 # @FUNCTION: linux_config_bin_exists
254 # @RETURN: true or false
256 # It returns true if .config exists in /proc, otherwise false
257 linux_config_bin_exists() {
258 export _LINUX_CONFIG_EXISTS_DONE=1
259 [[ -s /proc/config.gz ]]
262 # @FUNCTION: linux_config_exists
263 # @RETURN: true or false
265 # It returns true if .config exists otherwise false
267 # This function MUST be checked before using any of the linux_chkconfig_*
269 linux_config_exists() {
270 linux_config_src_exists || linux_config_bin_exists
273 # @FUNCTION: linux_config_path
275 # Echo the name of the config file to use. If none are found,
277 linux_config_path() {
278 if linux_config_src_exists; then
279 echo "${KV_OUT_DIR}/.config"
280 elif linux_config_bin_exists; then
281 echo "/proc/config.gz"
287 # @FUNCTION: require_configured_kernel
289 # This function verifies that the current kernel is configured (it checks against the existence of .config)
291 require_configured_kernel() {
292 if ! linux_config_src_exists; then
293 qeerror "Could not find a usable .config in the kernel source directory."
294 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
295 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
296 qeerror "it points to the necessary object directory so that it might find .config."
297 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
301 # @FUNCTION: linux_chkconfig_present
303 # @RETURN: true or false
305 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
306 # If linux_config_exists returns false, the results of this are UNDEFINED. You
307 # MUST call linux_config_exists first.
308 linux_chkconfig_present() {
309 linux_config_qa_check linux_chkconfig_present
310 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == [my] ]]
313 # @FUNCTION: linux_chkconfig_module
315 # @RETURN: true or false
317 # It checks that CONFIG_<option>=m is present in the current kernel .config
318 # If linux_config_exists returns false, the results of this are UNDEFINED. You
319 # MUST call linux_config_exists first.
320 linux_chkconfig_module() {
321 linux_config_qa_check linux_chkconfig_module
322 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == m ]]
325 # @FUNCTION: linux_chkconfig_builtin
327 # @RETURN: true or false
329 # It checks that CONFIG_<option>=y is present in the current kernel .config
330 # If linux_config_exists returns false, the results of this are UNDEFINED. You
331 # MUST call linux_config_exists first.
332 linux_chkconfig_builtin() {
333 linux_config_qa_check linux_chkconfig_builtin
334 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == y ]]
337 # @FUNCTION: linux_chkconfig_string
339 # @RETURN: CONFIG_<option>
341 # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
342 # If linux_config_exists returns false, the results of this are UNDEFINED. You
343 # MUST call linux_config_exists first.
344 linux_chkconfig_string() {
345 linux_config_qa_check linux_chkconfig_string
346 getfilevar_noexec "CONFIG_$1" "$(linux_config_path)"
349 # Versioning Functions
350 # ---------------------------------------
352 # @FUNCTION: kernel_is
353 # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
354 # @RETURN: true or false
356 # It returns true when the current kernel version satisfies the comparison against the passed version.
357 # -eq is the default comparison.
360 # For Example where KV = 2.6.9
361 # kernel_is 2 4 returns false
362 # kernel_is 2 returns true
363 # kernel_is 2 6 returns true
364 # kernel_is 2 6 8 returns false
365 # kernel_is 2 6 9 returns true
368 # Note: duplicated in kernel-2.eclass
370 # if we haven't determined the version yet, we need to.
371 linux-info_get_any_version
373 # Now we can continue
374 local operator test value
377 lt) operator="-lt"; shift;;
378 gt) operator="-gt"; shift;;
379 le) operator="-le"; shift;;
380 ge) operator="-ge"; shift;;
381 eq) operator="-eq"; shift;;
384 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
386 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
387 : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
388 [ ${test} ${operator} ${value} ]
394 # ignore files with ~ in it.
395 for i in $(ls ${1}/localversion* 2>/dev/null); do
396 [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
399 for i in ${lv_list}; do
406 # Check if the Makefile is valid for direct parsing.
407 # Check status results:
408 # - PASS, use 'getfilevar' to extract values
409 # - FAIL, use 'getfilevar_noexec' to extract values
410 # The check may fail if:
411 # - make is not present
412 # - corruption exists in the kernel makefile
413 get_makefile_extract_function() {
414 local a='' b='' mkfunc='getfilevar'
415 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
416 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
417 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
421 # internal variable, so we know to only print the warning once
422 get_version_warning_done=
424 # @FUNCTION: get_version
426 # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
427 # (if KV_FULL is already set it does nothing).
429 # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
431 # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
432 # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
433 # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
437 # no need to execute this twice assuming KV_FULL is populated.
438 # we can force by unsetting KV_FULL
439 [ -n "${KV_FULL}" ] && return 0
441 # if we dont know KV_FULL, then we need too.
442 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
445 # KV_DIR will contain the full path to the sources directory we should use
446 [ -z "${get_version_warning_done}" ] && \
447 qeinfo "Determining the location of the kernel source code"
448 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
449 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
451 if [ -z "${KV_DIR}" ]
453 if [ -z "${get_version_warning_done}" ]; then
454 get_version_warning_done=1
455 qewarn "Unable to find kernel sources at ${KERNEL_DIR}"
456 #qeinfo "This package requires Linux sources."
457 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
458 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
459 qeinfo "(or the kernel you wish to build against)."
460 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
462 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
468 # See if the kernel dir is actually an output dir. #454294
469 if [ -z "${KBUILD_OUTPUT}" -a -L "${KERNEL_DIR}/source" ]; then
470 KBUILD_OUTPUT=${KERNEL_DIR}
471 KERNEL_DIR=$(readlink -f "${KERNEL_DIR}/source")
475 if [ -z "${get_version_warning_done}" ]; then
476 qeinfo "Found kernel source directory:"
480 if [ ! -s "${KV_DIR}/Makefile" ]
482 if [ -z "${get_version_warning_done}" ]; then
483 get_version_warning_done=1
484 qeerror "Could not find a Makefile in the kernel source directory."
485 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
490 # OK so now we know our sources directory, but they might be using
491 # KBUILD_OUTPUT, and we need this for .config and localversions-*
492 # so we better find it eh?
493 # do we pass KBUILD_OUTPUT on the CLI?
494 local OUTPUT_DIR=${KBUILD_OUTPUT}
497 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
499 if [[ -z ${OUTPUT_DIR} ]]; then
500 # Decide the function used to extract makefile variables.
501 local mkfunc=$(get_makefile_extract_function "${KERNEL_MAKEFILE}")
503 # And if we didn't pass it, we can take a nosey in the Makefile.
504 OUTPUT_DIR=$(${mkfunc} KBUILD_OUTPUT "${KERNEL_MAKEFILE}")
507 # And contrary to existing functions I feel we shouldn't trust the
508 # directory name to find version information as this seems insane.
509 # So we parse ${KERNEL_MAKEFILE}. We should be able to trust that
510 # the Makefile is simple enough to use the noexec extract function.
511 # This has been true for every release thus far, and it's faster
512 # than using make to evaluate the Makefile every time.
513 KV_MAJOR=$(getfilevar_noexec VERSION "${KERNEL_MAKEFILE}")
514 KV_MINOR=$(getfilevar_noexec PATCHLEVEL "${KERNEL_MAKEFILE}")
515 KV_PATCH=$(getfilevar_noexec SUBLEVEL "${KERNEL_MAKEFILE}")
516 KV_EXTRA=$(getfilevar_noexec EXTRAVERSION "${KERNEL_MAKEFILE}")
518 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
520 if [ -z "${get_version_warning_done}" ]; then
521 get_version_warning_done=1
522 qeerror "Could not detect kernel version."
523 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
528 # and in newer versions we can also pull LOCALVERSION if it is set.
529 # but before we do this, we need to find if we use a different object directory.
530 # This *WILL* break if the user is using localversions, but we assume it was
531 # caught before this if they are.
532 if [[ -z ${OUTPUT_DIR} ]] ; then
533 # Try to locate a kernel that is most relevant for us.
534 for OUTPUT_DIR in "${SYSROOT}" "${ROOT}" "" ; do
535 OUTPUT_DIR+="/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build"
536 if [[ -e ${OUTPUT_DIR} ]] ; then
542 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
543 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
544 if [ -n "${KV_OUT_DIR}" ];
546 qeinfo "Found kernel object directory:"
547 qeinfo " ${KV_OUT_DIR}"
549 # and if we STILL have not got it, then we better just set it to KV_DIR
550 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
552 # Grab the kernel release from the output directory.
553 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
555 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
556 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
557 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
558 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
563 # KV_LOCAL currently contains the full release; discard the first bits.
564 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
566 # If the updated local version was not changed, the tree is not prepared.
567 # Clear out KV_LOCAL in that case.
568 # TODO: this does not detect a change in the localversion part between
569 # kernel.release and the value that would be generated.
570 if [ "$KV_LOCAL" = "$tmplocal" ]; then
576 # And we should set KV_FULL to the full expanded version
577 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
579 qeinfo "Found sources for kernel version:"
585 # @FUNCTION: get_running_version
587 # It gets the version of the current running kernel and the result is the same as get_version() if the
588 # function can find the sources.
589 get_running_version() {
592 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
593 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
594 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
598 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
599 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
603 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
604 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
609 # This handles a variety of weird kernel versions. Make sure to update
610 # tests/linux-info_get_running_version.sh if you want to change this.
611 local kv_full=${KV_FULL//[-+_]*}
612 KV_MAJOR=$(get_version_component_range 1 ${kv_full})
613 KV_MINOR=$(get_version_component_range 2 ${kv_full})
614 KV_PATCH=$(get_version_component_range 3 ${kv_full})
615 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}${KV_PATCH:+.${KV_PATCH}}}"
621 # This next function is named with the eclass prefix to avoid conflicts with
622 # some old versionator-like eclass functions.
624 # @FUNCTION: linux-info_get_any_version
626 # This attempts to find the version of the sources, and otherwise falls back to
627 # the version of the running kernel.
628 linux-info_get_any_version() {
630 if [[ $? -ne 0 ]]; then
631 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
637 # ebuild check functions
638 # ---------------------------------------
640 # @FUNCTION: check_kernel_built
642 # This function verifies that the current kernel sources have been already prepared otherwise it dies.
643 check_kernel_built() {
644 # if we haven't determined the version yet, we need to
645 require_configured_kernel
649 if kernel_is -ge 3 7; then
650 versionh_path="include/generated/uapi/linux/version.h"
652 versionh_path="include/linux/version.h"
655 if [ ! -f "${KV_OUT_DIR}/${versionh_path}" ]
657 eerror "These sources have not yet been prepared."
658 eerror "We cannot build against an unprepared tree."
659 eerror "To resolve this, please type the following:"
661 eerror "# cd ${KV_DIR}"
662 eerror "# make oldconfig"
663 eerror "# make modules_prepare"
665 eerror "Then please try merging this module again."
666 die "Kernel sources need compiling first"
670 # @FUNCTION: check_modules_supported
672 # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
673 check_modules_supported() {
674 # if we haven't determined the version yet, we need too.
675 require_configured_kernel
678 if ! linux_chkconfig_builtin "MODULES"; then
679 eerror "These sources do not support loading external modules."
680 eerror "to be able to use this module please enable \"Loadable modules support\""
681 eerror "in your kernel, recompile and then try merging this module again."
682 die "No support for external modules in ${KV_FULL} config"
686 # @FUNCTION: check_extra_config
688 # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
689 # the prefix ~ is not used) doesn't satisfy the directive.
690 check_extra_config() {
691 local config negate die error reworkmodulenames
692 local soft_errors_count=0 hard_errors_count=0 config_required=0
693 # store the value of the QA check, because otherwise we won't catch usages
694 # after if check_extra_config is called AND other direct calls are done
696 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
698 # if we haven't determined the version yet, we need to
699 linux-info_get_any_version
701 # Determine if we really need a .config. The only time when we don't need
702 # one is when all of the CONFIG_CHECK options are prefixed with "~".
703 for config in ${CONFIG_CHECK}; do
704 if [[ "${config:0:1}" != "~" ]]; then
710 if [[ ${config_required} == 0 ]]; then
711 # In the case where we don't require a .config, we can now bail out
712 # if the user has no .config as there is nothing to do. Otherwise
713 # code later will cause a failure due to missing .config.
714 if ! linux_config_exists; then
715 ewarn "Unable to check for the following kernel config options due"
716 ewarn "to absence of any configured kernel sources or compiled"
718 for config in ${CONFIG_CHECK}; do
721 local_error="ERROR_${config}"
722 msg="${!local_error}"
723 if [[ -z ${msg} ]]; then
724 local_error="WARNING_${config}"
725 msg="${!local_error}"
727 ewarn " - ${config}${msg:+ - }${msg}"
729 ewarn "You're on your own to make sure they are set if needed."
730 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
734 require_configured_kernel
737 einfo "Checking for suitable kernel configuration options..."
739 for config in ${CONFIG_CHECK}
741 # if we specify any fatal, ensure we honor them
747 if [[ ${config:0:1} == "~" ]]; then
750 elif [[ ${config:0:1} == "@" ]]; then
755 if [[ ${config:0:1} == "!" ]]; then
760 if [[ ${negate} == 1 ]]; then
761 linux_chkconfig_present ${config} && error=2
762 elif [[ ${reworkmodulenames} == 1 ]]; then
763 local temp_config="${config//*:}" i n
764 config="${config//:*}"
765 if linux_chkconfig_present ${config}; then
766 for i in ${MODULE_NAMES}; do
767 n="${i//${temp_config}}"
768 [[ -z ${n//\(*} ]] && \
769 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
774 linux_chkconfig_present ${config} || error=1
777 if [[ ${error} > 0 ]]; then
778 local report_func="eerror" local_error
779 local_error="ERROR_${config}"
780 local_error="${!local_error}"
782 if [[ -z "${local_error}" ]]; then
783 # using old, deprecated format.
784 local_error="${config}_ERROR"
785 local_error="${!local_error}"
787 if [[ ${die} == 0 && -z "${local_error}" ]]; then
788 #soft errors can be warnings
789 local_error="WARNING_${config}"
790 local_error="${!local_error}"
791 if [[ -n "${local_error}" ]] ; then
796 if [[ -z "${local_error}" ]]; then
797 [[ ${error} == 1 ]] \
798 && local_error="is not set when it should be." \
799 || local_error="should not be set. But it is."
800 local_error="CONFIG_${config}:\t ${local_error}"
802 if [[ ${die} == 0 ]]; then
803 ${report_func} " ${local_error}"
804 soft_errors_count=$[soft_errors_count + 1]
806 ${report_func} " ${local_error}"
807 hard_errors_count=$[hard_errors_count + 1]
812 if [[ ${hard_errors_count} > 0 ]]; then
813 eerror "Please check to make sure these options are set correctly."
814 eerror "Failure to do so may cause unexpected problems."
815 eerror "Once you have satisfied these options, please try merging"
816 eerror "this package again."
817 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
818 die "Incorrect kernel configuration options"
819 elif [[ ${soft_errors_count} > 0 ]]; then
820 ewarn "Please check to make sure these options are set correctly."
821 ewarn "Failure to do so may cause unexpected problems."
825 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
828 check_zlibinflate() {
829 # if we haven't determined the version yet, we need to
830 require_configured_kernel
833 # although I restructured this code - I really really really dont support it!
835 # bug #27882 - zlib routines are only linked into the kernel
836 # if something compiled into the kernel calls them
838 # plus, for the cloop module, it appears that there's no way
839 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
845 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
847 ebegin "checking ZLIB_INFLATE"
848 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
852 ebegin "checking ZLIB_DEFLATE"
853 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
862 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
863 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
864 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
865 (( LINENO_END = $LINENO_END - 1 ))
866 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
868 # okay, now we have a list of symbols
869 # we need to check each one in turn, to see whether it is set or not
870 for x in $SYMBOLS ; do
871 if [ "${!x}" = "y" ]; then
873 einfo "${x} ensures zlib is linked into your kernel - excellent"
879 eerror "This kernel module requires ZLIB library support."
880 eerror "You have enabled zlib support in your kernel, but haven't enabled"
881 eerror "enabled any option that will ensure that zlib is linked into your"
884 eerror "Please ensure that you enable at least one of these options:"
887 for x in $SYMBOLS ; do
892 eerror "Please remember to recompile and install your kernel, and reboot"
893 eerror "into your new kernel before attempting to load this kernel module."
895 die "Kernel doesn't include zlib support"
898 ################################
900 # Also used when inheriting linux-mod to force a get_version call
901 # @FUNCTION: linux-info_pkg_setup
903 # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
904 # to support the options specified in CONFIG_CHECK (if not null)
905 linux-info_pkg_setup() {
906 linux-info_get_any_version
908 if kernel_is 2 4; then
909 if [ "$( gcc-major-version )" -eq "4" ] ; then
911 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
912 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
914 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
915 ewarn "newer kernel that supports gcc-4."
917 ewarn "Also be aware that bugreports about gcc-4 not working"
918 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
924 [ -n "${CONFIG_CHECK}" ] && check_extra_config;